Pneumatic cooling device.



H. T. SUNDSTROM. PNEUMATIC GOOLING DEVICE.

' I APPLICATION FILED JULY 13, 1911. 1,033,022, 7 Patented Sept. 10,1912

, Br- I m? UNITED sTATEs PATENT oniuon.

HERMAN T. svnns'rnon, or Housrrori, rEXAs.

PNEUMATIC COOLIIYG FEVIGE.

Specification of Letters Patent. Patented Sept. 10, 1912.

' Application; fi-leti July 13, 1911. semi No; 638,297.

vices, and more particularly to such devices as are designed to cool the molds of linotype machines.

The object of the invention is to provide a device of the character describe which will eject jets of cool air against the molds carried by the mold disk of the machine, and keep said models fromfbecoming too hot. As is well known it is essential that the metal of which the type are formed be very hotin'order that the type may be perfectly formed, and the chief disadvantage of linotypc machines new in common use resides in the fact that the molds thereof become very hot and the matrices are heated tosuch a degree of temperature that they are injured by the heat.

It is the object of this invention to keep the molds and matrices comparatively cool and at the'sam'e time" to permit the metal from which the type are formed to attain a high degree of temperature.

Another advantage of the invention resides in the fact that in addition to keeping the molds, matrices and spate bands cool the jets of air also serve to keep said parts cleansed by blowing out all dust and foreign matter that may collect thereon.

W'ith the above and other objects in view.

the invention has particular relation to the certain nove'lfeaturesof constructibn, operation and arrangement of parts, an example of which will be described in this specification and illustrated in the accompanying drawings, wherein Figure 1, is a plan view of the mold disk showing the driving mechanism thereof and indicating, in dotted lines, my improvement attached thereto. F ig. 2, is a sectional view thereof taken on the line aa of Fig. 1, and showing also the inlet tube in section.

i Fig. 3, is a partial detail of the improvement, and Fig. 4, is'a sectional vi'ew of the detail shown in Fig. 3 taken on the line 6-]; of .Fig. 3. 1

. I. ..rerrmg. now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral 5 refers to the mold disk which isof the usual and well known construction and which-is driven by a suit-' able motor (not shown), through the spur gear 6. The mold disk carries two molds 7 and 8 arranged on opposite sidesthereo-f. Each' of these molds extends entirely through the disk but has an overhanging flange which rests against the face of the disk through which securing screws 9 and 10 extend, which engage in tapped holes in the disk and secure the molds firmly inplace. Eachmold is, provided with an oblong slot -11 and 12, extendingtherethrou-gh. These slots are arranged so as to communicate with the melting pot, (not shown), which is carried by the linotyqie machines, in the well known manner, and the molten metal, from which the type are formed, is cond'uoted,in the well known manner, from said melting pot to the slots of saidjmold and is forced therethrough against the matrices, which the type are formed, in the ordinary manner of machines of this chara-cter. The mold disk is provided with an annular groove 13 upon-its face, which is concentric witlLsaid mold disk.

All of the parts hereinbefore described are now in common use on the linotype machines whichare commonly used and my improvement consists of the attachments which will now be described :Surrounding the'groove 13, is an annular rib, or eleva-' tion, 14 and upon this rib is secured a thin disk 15 which is secured in place by means of the screw 16 in such a manner that the di.sk'-l5.will be stationary while disk 5 rotatesw- The disk-15, is'provi'ded with an aper 'ture'which extends therethrough and co'm nmnica'tes with the groove 13. A metallic tube 18"is secured to the disk 15 so as to communicate with the groove 13 through the aperture 17. This tube is supported by means of a collar 19 which depends from the supporting member 20. Two tubes 21- g and 22 communicate with the groove 13 and extend in opposite directions through the rib 14 and point, respectively, toward the molds 7 and 8. A suitable air motor (not shown), is connected with the tube 18 by means of a. suitable hose connection." The air current is' forced from said motor through the tube 18,, and aperture 17 into groove 13 and'thence through the tubes 21 positions, one of which is a half turn from the-other. In order to cutoff the air current from groove '13, when the disk 5 stops the combination with a mold disk having I hav'e'arranged, in said groove, two cut 0ft valves 23 and-24, which span said groove and whose outer surface is flush with the outer surface of disk 5 and: contacts closely against the inner surface of disk 15. One

of these valves always rests immediately be' neath the aperture 17, when the dlsk 5 is at rest and operates to cut off the current which Would otherwise flow therethrough,

The jets of air passing through tubes 21 and 22 are forced against the molds 7 and 8 and pass'around and over the same't-hereb'y reducing the temperature thereof and also pass over the slugs thereby reducing the temperature thereof and also blowing out all dust and other foreign matter therefrom.

While I have shown and described only one form of my improvement, yet I hereby reserve the right to modify the construction and arrangement of parts so long as I do not depart from the principle of the inven tion.

What I claim is e 1. A device of the character described including the combination with a disk having an air chamber in the face thereof, of molds carried by said disk, a plate secured upon said disk and covering said airchamber and having an aperture therethrough communieating with'said chamber, air outlets leading a from said chamber and discharging against the molds carried bysaid disk, and an inlet tube secured to said plate and communieating with the air chamber through the aperture therein.

2. In a device of the character described the combination with a mold disk provided with an air chamber and carrying molds, of a plate secured upon said disk and covering saidair chamber and having an aperture therethrough communicating with said chamber, air outlets leading from said chamber and discharging against the molds carried by the mold disk, and an inlet tube communicating with said air chamber through the aperture in said plate.

3. In a device of the character described an air chamber therein, of molds carried thereby, the air outlets leading from said air chamber and discharging jets of air against said molds, an air inlet communieating with said air chamber and conductingair thereto from a suitable generator and means closing said air inlet when said mold diskis at rest.

4a In a device of the characterdescribed the combination with a rotatable mold disk having an air chamber therein, of molds carried by said disk, a plate mounted upon said disk and rotatable relative theretoand inclosing said air chamber and having an aperture ,therethrough communicating with theair chamber, suitable discharge outlets leading from said air chamber and discharging against said molds, an inlet tube secured to said plate and communicating with said air chamber through the aperture in said plate, and means closing said inlet tube when said molddisk is at rest.

' 5. In a device of the character described, the combination with a mold disk having anairchamber therein, of a mold carried thereby, an air out-let leading from said air chamber and discharging jets of air against said mold,a n air inlet communicating with.

T. SUNDSTROM. Witnesses:

J. W. YEAGLEY, A N.'FITTGER.

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